Critical severity · published Mar 5, 2026
CVE-2026-3381
Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib
9.8
CVSS
0.6%
EPSS
No
On KEV
Description
Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib.
Compress::Raw::Zlib includes a copy of the zlib library. Compress::Raw::Zlib version 2.220 includes zlib 1.3.2, which addresses findings fron the 7ASecurity audit of zlib. The includes fixs for CVE-2026-27171.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Compress::Raw::Zlib · PMQS
through 2.219 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3381
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3381
Third Party Advisory
https://7asecurity.com/blog/2026/02/zlib-7asecurity-audit/
Product
https://github.com/madler/zlib
Release Notes
https://github.com/madler/zlib/releases/tag/v1.3.2
Issue Tracking
https://github.com/pmqs/Compress-Raw-Zlib/issues/41
Product
https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes
Third Party Advisory
https://www.cve.org/CVERecord?id=CVE-2026-27171